/* roulang page: index */
:root {
      --deep-blue: #0A1628;
      --card-bg: #132033;
      --energy-green: #00E676;
      --whistle-orange: #FF5722;
      --soft-gray: #B0C4DE;
      --muted-gray: #6B7B8D;
      --deep-gradient-start: #0A1628;
      --deep-gradient-end: #1A3A5C;
    }

    * {
      box-sizing: border-box;
    }

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      background-color: var(--deep-blue);
      color: var(--soft-gray);
      line-height: 1.7;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }

    .text-energy {
      color: var(--energy-green);
    }

    .bg-card {
      background-color: var(--card-bg);
    }

    .border-soft {
      border-color: rgba(0, 230, 118, 0.15);
    }

    .hover-lift {
      transition: all 0.25s ease;
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3), 0 8px 10px -6px rgba(0,0,0,0.2);
      border-color: rgba(0, 230, 118, 0.5);
    }

    .live-dot {
      display: inline-block;
      width: 8px;
      height: 8px;
      background-color: var(--whistle-orange);
      border-radius: 50%;
      margin-right: 6px;
      animation: pulse 1.4s infinite;
    }

    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.6; transform: scale(1.2); }
      100% { opacity: 1; transform: scale(1); }
    }

    .score-number {
      font-family: 'DIN Alternate', 'Roboto Mono', 'Courier New', monospace;
      font-weight: 700;
      font-size: 28px;
      color: var(--energy-green);
    }

    .tactical-grid {
      background-image: 
        linear-gradient(rgba(26, 58, 92, 0.25) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 58, 92, 0.25) 1px, transparent 1px);
      background-size: 40px 40px;
    }

    .faq-item[open] summary {
      border-left: 3px solid var(--energy-green);
      background-color: rgba(0, 230, 118, 0.05);
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 1.25rem;
      font-weight: 600;
      color: white;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-radius: 12px;
      background-color: var(--card-bg);
      transition: all 0.2s;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary i {
      transition: transform 0.2s;
    }
    .faq-item[open] summary i {
      transform: rotate(45deg);
    }

    .faq-content {
      padding: 0 1.25rem 1.25rem;
      color: var(--soft-gray);
    }

    @media (max-width: 768px) {
      .score-number {
        font-size: 22px;
      }
      .h1-mobile {
        font-size: 36px;
        line-height: 1.2;
      }
    }

    .scrollbar-hide::-webkit-scrollbar {
      display: none;
    }
    .scrollbar-hide {
      -ms-overflow-style: none;
      scrollbar-width: none;
    }

    .text-shadow-dark {
      text-shadow: 0 2px 10px rgba(0,0,0,0.5);
    }